For most people, having an at-home COVID test or two handy is just a normal part of life these days. But, if you happen to take a test and get a positive you weren’t expecting, it’s more than ...

All tests can potentially result in false positives and false negatives. Each test can be studied for how often we can expect false positives and false negatives. The CDC has shared guidelines for how ...

Infectious disease specialist Gonzalo Ballon-Landa, MD, of Scripps Health in San Diego, was a bit bewildered. One of his patients who had all the signs and symptoms of COVID-19 had tested negative ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. When it comes to knowing your medical status, the ideal scenario is to ...

Researchers found that testing people for SARS-CoV-2 -- the virus that causes COVID-19 -- too early in the course of infection is likely to result in a false negative test, even though they may ...

Adrian Esterman does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...